I feel like this is a silly question, but I'll ask anyway... I'm trying to do something like this:
def func(x: Int, y: Int) = { val value: Int = 0 //from config (x, y) match { case (value, value) => "foo" case _ => "bar" } } But both the repl and intelliJ shower me with warnings. (e.g. "patterns after a variable pattern cannot match"; "suspicious shadowing by a variable pattern"; etc.). Is there a correct way to match on non-literal values?
Yes! There are two ways to get what you want. The first is to capitalize the names of the variables you wish to match against:
def func(x: Int, y: Int) = { val Value: Int = 0 // from config (x, y) match { case (Value, Value) => "foo" case _ => "bar" } } If you don't want to go that route (because it's not idiomatic to capitalize variable names, etc.), you can backtick them in the match:
def func(x: Int, y: Int) = { val value: Int = 0 // from config (x, y) match { case (`value`, `value`) => "foo" case _ => "bar" } } I'd suggest using backticks in most situations.
